Jamaica’s plant life has changed considerably over the centuries. When the Spanish came here in 1494- except for small agricultural clearings- the country was deeply forested, but the European settlers cut down the great timber trees for building purposes and cleared the plains, savannahs, and mountain slopes for cultivation. Many new plants were introduced including sugarcane, bananas, and citrus trees.
In the areas of heavy rainfall are stands of bamboo, ferns, ebony, mahogany, and rosewood. Cactus and similar dry-area plants are found along the south and southwest coastal area. Parts of the west and southwest consist of large grasslands, with scattered stands of trees.
The Jamaican animal life, typical of the Caribbean, includes a highly diversified wildlife with many endemic species found nowhere else on earth. As with other oceanic islands, Land mammals are made up almost entirely of bats. the only non-bat native mammal extant in Jamaica is the Jamaican Hutia, locally known as the coney. Introduced mammals such as wild boar and the Small Asian Mongoose are also common.
Jamaica is also home to many reptiles, the largest of which is the American Crocodile. However, it is only present within the Black River and a few other areas. Lizards such as anoles and iguanas and snakes such as racers and the Jamaica Boa (the largest snake on the island) are common. None of Jamaica’s native snakes are dangerously venomous to humans. Birds are abundant, and make up the bulk of the endemic and native vertebrate species. beautiful and exotic birds such as the Jamaican Tody and the Doctor Bird (the national bird) can be found, among a large number of others.
Insects and other invertebrates are abundant, including the world’s largest centipede, The Amazonian giant centipede, and the Homerus swallowtail, the Western Hemisphere’s largest butterfly.
Jamaican waters contain considerable resources of fresh-and saltwater fish. The chief varieties of saltwater fish are kingfish, jack, mackerel, whiting, bonito, and tuna. Fish that occasionally enter freshwater include snook, jewfish, grey and black snapper, and mullet. Fish that spend the majority of their lives in Jamaica’s fresh waters include many species of live-bearers, killifish, freshwater gobies, the Mountain Mullet, and the American Eel. Tilapia have been introduce from Africa for aquaculture, and are very common.
Among the variety of terrestrial, aquatic and marine ecosystems are dry and wet limestone forests, rainforest, riparian woodland, wetlands, caves, rivers, seagrass beds and coral reefs.
The biodiversity is indicated by a number five (5) ranking amongst countries worldwide of the endemic plants and animals in Jamaica.
The authorities had recognized the tremendous significance and potential of this aspect of their heritage and designated some of the more ‘fertile’ areas ‘protected’. Among the island’s protected areas are the Cockpit Country, Hellshire Hills, and Litchfield forest reserves. In 1992, Jamaica’s first marine park, covering nearly 6 square miles (about 15km²), was established in Montego Bay.
The following year Blue and John Crow Mountains National Park was created on roughly 300 square miles (780km²) of wilderness that supports thousands of tree and fern species and rare animals.